Show:
Electricity and Magnetism
Life Sciences
Earth Sciences
Physical Science
Mix Review
100
Electric motors and doorbells are similar in that they are all made from___________.
electromagnets
100
The concentration of energy begins with producers where there is a lot of energy that originally comes from the _______.
sun
100
If a mineral can be scratched by your fingernail, is the hardness of your mineral less than or greater than 4?
about 2.5
100
An example of a chemical reaction is: A. Water freezing to become ice, B. Mixing vinegar and baking soda, C. Filtering sand from salt water, D. Separating iron filing from sand using a magnet.
B
100
Name the process where water will become very cold and become a solid.
freeze
200
Electrically charged particles can_________or__________
attract or repel
200
Energy is lost at each stage as it flows from the producer to the top level consumer. This is called an energy _____________.
pyramid
200
Rocks formed as a result of great heat and pressure deep in the earth is called______________ rocks.
metamorphic
200
All matter is made up of ___________.
atoms
200
Sun spots are areas on the suns that are ____________than the other areas on the sun’s surface?
colder
300
A copper wire is a good example of a _________.
conductor
300
Many fungi, insects, and microorganisms recycle matter from dead plants and animals and are called_________.
decomposer
300
Limestone can become marble under extreme heat and pressure. What type of rock is marble?
metamorphic
300
Living organisms on earth are mostly comprised of what 4 elements?
hydrogen, oxygen, nitrogen, and carbon
300
Solar flares sometimes affect __________ on earth.
satellite transmissions
400
Moving__________cause an electrical current.
electrons
400
Some kinds of plants and animals survive well in an environment. They are well suited or______________.
adapted
400
12. Igneous rocks can weather and erode to become sedimentary rocks such as conglomerate. This is an example of the __________ _____________.
rock cycle
400
One group of elements called ______________ are high in electrical and thermal conductivity.
metals
400
What is a light year?
the distance light travels in a year
500
Wood or rubber soled tennis shoes are good example of _________.
insulators
500
Animals or plants that are not well suited to their environment may become threatened, endangered, then _________.
extinct
500
Volcanoes create new land and rocks formed from the lava that flows from a volcano are called______________ rocks.
igneous
500
Al Fe Ni Cu Ag Au are metals made of pure elements. Steel and brass are called _____________.
alloys
500
Light from the sun takes ____________ to travel to earth.
8 seconds